Jeannine

This page lists questions and answers that were posted by visitors named Jeannine.

Questions

The following questions were asked by visitors named Jeannine.

A 0.13 kg meter stick is held perpendicular to a wall by a 2.6 m string going from the wall to the far end of the stick. (a) Find the tension in the string. _________N (b) If a shorter string is used, will its tension be greater than, less than, or the sa...

A circular blade on a radial arm saw is turning at 257 rad/s at the instant the motor is turned off. In 17.0 s the speed of the blade is reduced to 90 rad/s. Assume the blade to be a uniform solid disk of radius 0.170 m and mass 0.400 kg. Find the net tor...

(a) Determine the amount of work (in joules) that must be done on a 104 kg payload to elevate it to a height of 993 km above the Earth's surface. ______ MJ (b) Determine the amount of additional work that is required to put the payload into circular orbit...

In basketball, a free throw is 1 point and a field goal is either 2 or 3 points. In a recent season, Tim Duncan of the San Antonio Spurs scored a total of 1342 points. The total number of 2-point field goals and 3-point field goals was 517, and he made 30...

Find an expression for the area of a square with the given perimeter. 1. P= (12x+20y) in. 2. P= (36a-16b) cm.

A picture that measures 7 inches by 7 inches is being framed. The area of the frame is 32 square inches. What is the width of the frame?

Bob..thank you very much for taking time with my question but I still don't seem to get it. the book answers are a=672 N.m b=14.1 KW to re-iterate the problem...a shaft rotating @ 800 rpm delivers a torque of 240 N.m to an Output Shaft that is rotating @...

a shaft rotation @ 800 rpm delivers a torque of 240 N.m to an output shaft that is rotating @ 200 rpm. a. if the efficiency of the machine is 70%, compute the output torque b, what is the output power e=Po/Pi .7=x/240 N.m = 168 N.m this is not the answer...

The width of a rectangle is fixed at 7 cm. Determine (in terms of an inequality)those lengths for which the area will be less than 161 cm2.

I would like to know about unions and what the role of the supervisor is when the union is planning to take complaints to uppermanagement.

I just want some help checking my homework... Question: A care travelling at a velocity of 42ms-1 suddenly loses engine power and slows at a constant rate. It comes to rest after 75 seconds. a what is the acceleration during this time ? b how far did the...

An egg is dropped from 75 cm, what velocity is egg at when it hits the floor. What is the maximum height it can be dropped from to withstand impact velocity of 1.7ms-1 I used V*2 = v*2 + 2ad V = sqrt 0 + 2 x -9.8 x .75 = -3.83m/s 0.14744 m rounded to 0.15...

If a man weighs 194 pounds and is 69 inches tall where is his center of gravity?

Answers

The following answers were posted by visitors named Jeannine.

x+Y=-4 EQ1 x-y=12 EQ2 x=y+12 EQ3 put in the first equation x+y=-4 substitute equation 3 for x y+ (y+12)=-4 2y+12=-4 2y= -4-12 2y =-16 y= -16/2 y= -8 Put the new value of y in EQ3 x= y+12 x= -8+12 x= 4 so two numbers are 4 and -8

Population mean = 14 Population standard deviation = 2.5 Margin error = 1/4 = 0.25 level of confidence = 0.95 z = 1.96 n =[(1.96*3)/0.25]^2 =553.19 =554

Thank you so much.... I got that wrong as didn't know whether to use the time... Got confused as the car was already moving .

You have to take the 8.00 and divide by 50 pieces to get the price per piece. Then multiply by 20 to get the new price per box. Not sue what the second question is asking ? How many boxes will you have ? If that is the question then you must divide 50 by...

I assume the answer is b. a week has 7 days so divide the 45 days... That gives you 6. Which means all 7 days of the week will have to be represented at least 6 times with three days appearing 7 times.